00:01
Hi, in this question we are asked to find out the pair of a compound which form buffer in the aqua solution.
00:06
So, buffer, basically this is formed by a weak acid along with the salt of strong base or a weak base along with the salt of strong acid.
00:34
The third case is also there, that is weak acid and weak base, they can also form the buffer.
00:40
In some cases so we these are the conditions for the buffer now let's look into the options the first option is h -s -c -n and nacn so here basically h -c -n this is weak acid and nacn and nacn basically is this all comes from n -a -o -h along with h cn so n -o -h is a strong base and this hc and this hc is weak acid.
01:18
We can see here that this is a combination of weak acid and strong base.
01:23
So this will form buffer.
01:28
Then the second option is hcl along with n -a -o -h.
01:33
Now this is strong base, this is strong base and this is strong acid.
01:37
So they will not form the buffer.
01:40
They will form the salt of neutral.
01:42
So they will form a salt which is neutral in h .s.
01:45
Then the third is nacn along with n aos.
01:51
So here n .o .h is a strong base and nacn is also comes from a strong base and weak acid...